CodeForces 469B Intercepted Message

         题意是给两组数，求两组数a[],b[]中分别任意相加两个或者几个数的值相等的有多少个

AC代码：

#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1000005;
int a[MAXN],b[MAXN];
int sum1,sum2;
int cnt,n,m;
int main()
{
  scanf("%d%d",&n,&m);
  for(int i=0;i<n;i++)
    scanf("%d",&a[i]);
  for(int j=0;j<m;j++)
    scanf("%d",&b[j]);
  sum1 = 0, sum2 = 0, cnt = 0;
  int x = 0, y = 0;
  while(x < n || y < m){
    if(sum1 > sum2){
      sum2 += b[y++];
    }
    else{
      sum1 += a[x++];
    }
    if(sum1 == sum2){
      cnt++;
    }
  }
  printf("%d\n",cnt);
  return 0;
}